JasPer is a computer software project to create a reference implementation of the codec specified in the JPEG-2000 Part-1 standard (i.e. ISO/IEC 15444-1) - started in 1997 at Image Power Inc. and at the University of British Columbia.[3] It consists of a C library and some sample applications useful for testing the codec.
| Original author(s) | The University of British Columbia, Michael David Adams, Image Power, Inc. |
|---|---|
| Initial release | 1999[1] |
| Stable release | 4.2.4[2] 
/ 27 April 2024 |
| Repository | |
| Operating system | OSX, Windows, POSIX |
| Available in | C |
| Type | graphic software |
| License | JasPer License Version 2.0 |
| Website | www |
The copyright owner began licensing the code to the public under an MIT License-style license in 2004 in response to requests from the open-source community. As of 2011[update] JasPer operated as a component of many software projects, both free and proprietary, including (but not limited to) netpbm (as of release 10.12), ImageMagick and KDE[4] (as of version 3.2).[5][6] As of 22 June 2010[update] the GEGL graphics library supported JasPer in its latest Git versions.[7]
In a series of objective JPEG-2000-compression quality tests conducted in 2004, "JasPer was the best codec, closely followed by IrfanView and Kakadu".[8] However, Jasper remains one of the slowest implementations of the JPEG-2000 codec, as it was designed for reference, not performance.[original research?]
Etymology
editThe name "JasPer" has simultaneous connotations with Canada's Jasper National Park, with the semi-precious gemstone, jasper, and with "JP" as an abbreviation of the JPEG-2000 standard.[9]
See also
editReferences
edit- ^ "JasPer library: an open source JPEG 2000 codec". Retrieved 2010-07-28.
- ^ "Release 4.2.4". 27 April 2024. Retrieved 23 May 2024.
- ^ "Image Power and the University of British Columbia Team Up in Development of Digital Image Compression Technology". Press release. Vancouver, British Columbia, Canada: Image Power Inc. May 1, 1997. Archived from the original on 2006-10-24.
- ^ "KDE TechBase - Development/Architecture/KDE3/Imaging and Animation". Retrieved 2010-01-20.
- ^ "The JasPer Project Home Page". Retrieved 2010-01-20.
- ^ "XnView User Guide". Retrieved 2010-01-20.
- ^ "The GEGL source code git repository". 22 June 2010. Retrieved 2010-07-28.
- ^ Ebrahimi, Farzad; Chamik, Matthieu; Winkler, Stefan (November 2004). "JPEG vs. JPEG2000: An Objective Comparison of Image Encoding Quality". In Tescher, Andrew G. (ed.). Applications of Digital Image Processing XXVII. Proceedings of the SPIE. Vol. 5558. pp. 300–308. CiteSeerX 10.1.1.65.5495. doi:10.1117/12.564835.
- ^
Adams, Michael D. (2001-12-25). "JasPer Software Reference Manual Version 1.500.4" (PDF). p. 20. Archived from the original (PDF) on 2012-04-26. Retrieved 2011-12-11.
The JasPer software is named, in part, after Jasper National Park. [...] 'jasper' is also the name of an opaque cryptocrystalline variety of quartz used for ornamentation or as a gemstone - hence, the implication that the software is precious (i.e., like a gemstone). Lastly, the name "jasper" [...] contains a letter "J" followed subsequently by a letter "P", not unlike the abbreviation "JP" that is associated with the JPEG-2000 standard.
Notes:
- Adams, Michael D.; Ward, Rabab K. (May 2004). "JasPer: a portable flexible open-source software tool kit for image coding/processing". IEEE International Conference on Acoustics, Speech, and Signal Processing, 2004. Proceedings. (ICASSP '04) (PDF). doi:10.1109/ICASSP.2004.1327092. ISBN 0-7803-8484-9.
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